JPH0658198B2 - Shell tube heat exchanger - Google Patents
Shell tube heat exchangerInfo
- Publication number
- JPH0658198B2 JPH0658198B2 JP6734988A JP6734988A JPH0658198B2 JP H0658198 B2 JPH0658198 B2 JP H0658198B2 JP 6734988 A JP6734988 A JP 6734988A JP 6734988 A JP6734988 A JP 6734988A JP H0658198 B2 JPH0658198 B2 JP H0658198B2
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- medium
- tube
- shell
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/005—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having bent portions or being assembled from bent tubes or being tubes having a toroidal configuration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、伝熱管の管軸を水平にした横置形のシェルチ
ューブ熱交換器に係り、特に気液二相状態の媒体を扱う
場合に適するよう媒体入口部の構造を改良したシェルチ
ューブ熱交換器に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a horizontal shell-tube heat exchanger in which the tube axis of a heat transfer tube is horizontal, and particularly to a gas-liquid two-phase state. The present invention relates to a shell-tube heat exchanger having an improved medium inlet structure suitable for handling a medium.
（従来の技術） シェルチューブ熱交換器は、シェル内に複数の伝熱管を
収容配置してなり、通常、大型のシェルチューブ熱交換
器はその伝熱管を水平にした横置の状態で設置される。(Prior Art) A shell tube heat exchanger has a plurality of heat transfer tubes housed and arranged in a shell. Usually, a large shell tube heat exchanger is installed horizontally with its heat transfer tubes horizontal. It
しかしながら、この横置形のシェルチューブ熱交換器に
あっては、伝熱管内に流れる媒体の入口条件が気液二相
状態となる場合には、各伝熱管内に媒体が均等には分配
されず、伝熱性能が低下するという問題があった。However, in this horizontal shell-tube heat exchanger, when the inlet condition of the medium flowing in the heat transfer tubes is a gas-liquid two-phase state, the medium is not evenly distributed in each heat transfer tube. However, there was a problem that the heat transfer performance was lowered.
これを第５図に示した横置形のシェルチューブ熱交換に
より説明する。図示するように、複数の伝熱管１はシェ
ル２内に水平に収容配置され、端部が管板３に固定され
ている。またシェル２の端部には管板３と対向した媒体
入口ノズル５を有する媒体入口ヘッダ６が接続されてい
る。This will be explained with reference to the horizontal shell-tube heat exchange shown in FIG. As shown in the figure, the plurality of heat transfer tubes 1 are accommodated horizontally in the shell 2, and the ends thereof are fixed to the tube sheet 3. A medium inlet header 6 having a medium inlet nozzle 5 facing the tube sheet 3 is connected to the end of the shell 2.
このようなシェルチューブ熱交換器においては、気液二
相状態の媒体Ａが媒体入口ノズル５から媒体入口ヘッダ
６内に流入すると、重力の作用で液相Ｌが媒体入口ヘッ
ダ６内の下部に流れこむことから、結果として下部の伝
熱管１には主に液相Ｌが、上部の伝熱管１には主に気相
Ｇが流入することとになる。したがって、各伝熱管１に
は媒体が均等に流れないことから、伝熱性能の低下を招
いていた。In such a shell-tube heat exchanger, when the medium A in a gas-liquid two-phase state flows into the medium inlet header 6 from the medium inlet nozzle 5, the liquid phase L moves to the lower portion in the medium inlet header 6 by the action of gravity. As a result, the liquid phase L mainly flows into the lower heat transfer tube 1 and the gas phase G mainly flows into the upper heat transfer tube 1. Therefore, since the medium does not flow evenly through each heat transfer tube 1, the heat transfer performance is deteriorated.
なお、このような媒体の不均等な配分を緩和するため
に、例えば特開昭６１−２５０４９３号公報に示される
ように媒体入口ヘッダ内にバッフル板を配置したシェル
チューブ熱交換器が提案されている。しかし、この熱交
換器にあっては、液相を上部の伝熱管に到達させること
はできても、やはり気液二相状態の媒体を各伝熱管に均
等に流入されることは困難であった。In order to alleviate such uneven distribution of the medium, for example, a shell tube heat exchanger in which a baffle plate is arranged in the medium inlet header is proposed as shown in JP-A-61-250493. There is. However, in this heat exchanger, although the liquid phase can reach the upper heat transfer tubes, it is still difficult to evenly flow the gas-liquid two-phase medium into each heat transfer tube. It was
（発明が解決しようとする課題） このように従来の横置形のシェルチューブ熱交換器にあ
っては、気液二相状態の媒体を伝熱管に均等に流入させ
ることが困難であり、このため伝熱性能の低下を招いて
いた。(Problems to be Solved by the Invention) As described above, in the conventional horizontal shell-tube heat exchanger, it is difficult to evenly flow the gas-liquid two-phase medium into the heat transfer tube. The heat transfer performance was deteriorated.
本発明は、このような課題を解決し、気液二相状態の媒
体を水平の複数の伝熱管に略均等に流入させることがで
き、伝熱性能の低下を防止することができるシェルチュ
ーブ熱交換器を提供することを目的とする。The present invention solves such a problem and allows a medium in a gas-liquid two-phase state to flow into a plurality of horizontal heat transfer tubes substantially evenly, and prevents a decrease in heat transfer performance. The purpose is to provide a exchanger.
［発明の構成］ （課題を解決するための手段） 上記目的を達成するために本発明は、熱源流体を流すシ
ェル内に、気液二相状態の媒体を流す複数の伝熱管を実
質的に水平に配置したシェルチューブ熱交換器におい
て、前記伝熱管の媒体入口部を上方に曲げて形成し、こ
の媒体入口部に媒体を気相と自由液面を有する液相とに
分離してからそれぞれの伝熱管に供給する二相分流機構
を設けたものである。[Configuration of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention substantially comprises a plurality of heat transfer tubes for flowing a medium in a gas-liquid two-phase state in a shell for flowing a heat source fluid. In a horizontally arranged shell-tube heat exchanger, the medium inlet part of the heat transfer tube is formed by bending upward, and the medium is separated into a gas phase and a liquid phase having a free liquid surface at the medium inlet part, respectively. Is provided with a two-phase flow dividing mechanism for supplying to the heat transfer tube.
（作用） 伝熱管の媒体入口部が上方に曲げて形成されているた
め、媒体入口部には伝熱管の管軸と交差する媒体の自由
液面が形成される。(Operation) Since the medium inlet portion of the heat transfer tube is bent upward, a free liquid surface of the medium intersecting with the tube axis of the heat transfer tube is formed at the medium inlet portion.
このように二相分流機構によって媒体を気相と液相とに
分離し、媒体入口部に伝熱管の管軸と交差する媒体の自
由液面を形成することができ、媒体の気相および液相を
各伝熱管内に均等に配分することも可能となる。よっ
て、伝熱性能の低下が防止される。In this way, the medium can be separated into a gas phase and a liquid phase by the two-phase flow dividing mechanism, and a free liquid surface of the medium that intersects with the tube axis of the heat transfer tube can be formed at the medium inlet portion. It is also possible to evenly distribute the phases in each heat transfer tube. Therefore, deterioration of heat transfer performance is prevented.
（実施例） 以下、本発明の実施例を添付図面に基づいて説明する。(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing.
横置形のシェルチューブ熱交換器を示す第１図におい
て、１は水平の円筒状シェル２内にその長手方向に沿っ
て管軸が水平になるように配置された複数の伝熱管であ
り、これら伝熱管１の媒体入口部２０が垂直上方に曲げ
て形成されている。伝熱管１の媒体入口部２０に位置し
たシェル２の端部もその伝熱管１に沿って垂直上方に曲
げて形成されており、その上端部には水平管板３が固定
され、シェル２の他端には垂直の管板４が固定されてい
る。In FIG. 1 showing a horizontal shell-tube heat exchanger, 1 is a plurality of heat transfer tubes arranged in a horizontal cylindrical shell 2 so that the tube axis is horizontal along the longitudinal direction thereof. The medium inlet portion 20 of the heat transfer tube 1 is formed by bending vertically upward. The end of the shell 2 located at the medium inlet 20 of the heat transfer tube 1 is also formed by bending vertically upward along the heat transfer tube 1, and the horizontal tube plate 3 is fixed to the upper end of the shell 2 and A vertical tube sheet 4 is fixed to the other end.
垂直に曲げて形成された伝熱管１の媒体入口部２０は上
記水平の管板３を貫通して上方に突出した状態で固定さ
れ、伝熱管１のの媒体出口部２１は上記垂直の管板４に
固定されている。そして、水平の管板３の上部には側部
に媒体入口ノズル５を有する媒体入口ヘッダ６が伝熱管
１の媒体入口部２０を覆うように接続され、この媒体入
口ヘッダ６内には媒体Ａが導入された場合、水平の管板
３より突出した伝熱管１と直交する媒体Ａの液相Ｌの自
由液面２２が形成されるようになっている。The medium inlet portion 20 of the heat transfer tube 1 formed by bending vertically is fixed in a state of penetrating the horizontal tube sheet 3 and protruding upward, and the medium outlet portion 21 of the heat transfer tube 1 is fixed to the vertical tube sheet. It is fixed at 4. A medium inlet header 6 having a medium inlet nozzle 5 on the side is connected to the upper portion of the horizontal tube sheet 3 so as to cover the medium inlet portion 20 of the heat transfer tube 1, and the medium A is placed in the medium inlet header 6. Is introduced, the free liquid surface 22 of the liquid phase L of the medium A orthogonal to the heat transfer tube 1 protruding from the horizontal tube plate 3 is formed.
伝熱管１の媒体入口部２０は媒体Ａの液相Ｌの自由液面
２２より上方に突出され、媒体Ａの気相Ｇが流入できる
ようになっている。また、媒体Ａの液相Ｌの自由液面２
２により下方の伝熱管１には媒体Ａの液相Ｌを伝熱管１
内に流入させるための小孔８が形成されている。更に、
媒体入口ノズル５から流入された気液二相状態の媒体Ａ
を気相Ｇと液相Ｌとに分離して安定した液相Ｌの自由液
面２２を形成するために、媒体入口ヘッダ６内における
媒体入口ノズル５近傍にはバッフル板７が垂直に取付け
られている。これら伝熱管１の媒体入口部２０の構成お
よびバッフル板７によって媒体Ａを気相Ｇと自由液面２
２とを有する液相Ｌとに分離するための二相分流機構２
３が構成されている。The medium inlet 20 of the heat transfer tube 1 is projected above the free liquid surface 22 of the liquid phase L of the medium A so that the gas phase G of the medium A can flow in. In addition, the free liquid surface 2 of the liquid phase L of the medium A
2, the liquid phase L of the medium A is transferred to the heat transfer tube 1 below.
A small hole 8 is formed so as to flow into the inside. Furthermore,
The medium A in a gas-liquid two-phase state introduced from the medium inlet nozzle 5
A baffle plate 7 is vertically mounted in the medium inlet header 6 in the vicinity of the medium inlet nozzle 5 in order to form a stable free liquid surface 22 of the liquid phase L by separating the gas phase G and the liquid phase L. ing. Due to the structure of the medium inlet 20 of the heat transfer tube 1 and the baffle plate 7, the medium A is transferred to the gas phase G and the free liquid surface 2
Two-phase splitting mechanism 2 for separating into a liquid phase L having
3 are configured.
垂直の管板４の外側には伝熱管１の媒体出口部２１を覆
う媒体出口ヘッダ９が接続され、この媒体出口ヘッダ９
には媒体Ａを外部へ流出させるための媒体出口ノズル１
０が形成されている。シェル２の媒体出口側にはシェル
２内に熱源流体Ｂを流入させるための流体入口ノズル２
４が、媒体入口側には流体出口ノズル２５が形成されて
いる。A medium outlet header 9 that covers the medium outlet portion 21 of the heat transfer tube 1 is connected to the outside of the vertical tube sheet 4.
Is a medium outlet nozzle 1 for flowing the medium A to the outside.
0 is formed. A fluid inlet nozzle 2 for allowing the heat source fluid B to flow into the shell 2 on the medium outlet side of the shell 2.
4, a fluid outlet nozzle 25 is formed on the medium inlet side.
次に本実施例の作用を述べる。Next, the operation of this embodiment will be described.
気液二相状態の媒体Ａは媒体入口ノズル５から媒体入口
ヘッダ６内に流入し、バッフル板７の作用で気相Ｇは上
方へ、液相Ｌは下方へと分離され、液相Ｌは管板３の上
に自由液面２２を形成した後、伝熱管１の各小孔８から
各伝熱管１内に流入する。The medium A in a gas-liquid two-phase state flows into the medium inlet header 6 from the medium inlet nozzle 5, and the gas phase G is separated upward and the liquid phase L is separated downward by the action of the baffle plate 7. After the free liquid surface 22 is formed on the tube plate 3, it flows into each heat transfer tube 1 from each small hole 8 of the heat transfer tube 1.
一方気相Ｇは伝熱管１の上端部（媒体入口部）２０から
各伝熱管１内に流入する。そして、この気相Ｇと液相Ｌ
とは各伝熱管１内を流れてシェル２内を流れる熱源流体
ＢＢと熱交換された後、媒体出口ヘッダ９から媒体出口
ノズル１０を通って流出する。On the other hand, the gas phase G flows into each heat transfer tube 1 from the upper end portion (medium inlet portion) 20 of the heat transfer tube 1. And this gas phase G and liquid phase L
Is heat-exchanged with the heat source fluid BB flowing in each heat transfer tube 1 and flowing in the shell 2, and then flows out from the medium outlet header 9 through the medium outlet nozzle 10.
このように媒体入口ヘッダ６内のバッフル板７と伝熱管
１の小孔８などからなる二相分流機構２３により気液二
相状態の媒体を各伝熱管１内に均等に配分することがで
きるので、伝熱性能の低下を防止することができる。In this way, the two-phase flow dividing mechanism 23 including the baffle plate 7 in the medium inlet header 6 and the small holes 8 of the heat transfer tubes 1 can evenly distribute the medium in the gas-liquid two-phase state in each heat transfer tube 1. Therefore, it is possible to prevent a decrease in heat transfer performance.
第２図〜第４図は本発明の他の実施例を示したものであ
る。図示するように前記実施例と同様に構成された第１
のシェルチューブ熱交換器１１の側部にはこれと平行に
第２のシェルチューブ熱交換器１２が配置されている。
第２のシェルチューブ熱交換器１２は水平円筒状の第２
のシェル２６内にその長手方向に沿って管軸が水平にな
るよう複数の第２の伝熱管２７を配置し、これら伝熱管
２７の両端部を管板２８，２９に固定したもので、第１
のシェルチューブ熱交換器１とは逆にシェル２６内に媒
体Ａが、伝熱管２７内に熱源流体Ｂがそれぞれ流される
ようになっている。シェル２６の一端には媒体出口ノズ
ル１３が形成されると共に熱源流体入口ノズル３０を有
する熱源流体入口ヘッダ３１が接続され、その媒体出口
ノズル１３は第１のシェルチューブ熱交換器１１の媒体
入口ノズル５に、熱源流体入口ノズル３０は熱源流体接
続配管１４を介して第１のシェルチューブ熱交換器１１
の熱源流体出口ノズル２５にそれぞれ接続されている。
シェル２６の他端には媒体入口ノズル１５が形成される
と共に、熱源流体出口ノズル３２を有する熱源流体出口
ヘッダ３３が接続されている。2 to 4 show another embodiment of the present invention. As shown in the figure,
A second shell-tube heat exchanger 12 is arranged on the side of the shell-tube heat exchanger 11 in parallel therewith.
The second shell-tube heat exchanger 12 has a horizontal cylindrical second
A plurality of second heat transfer tubes 27 are arranged in the shell 26 so that the tube axis is horizontal along the longitudinal direction thereof, and both ends of these heat transfer tubes 27 are fixed to tube plates 28 and 29. 1
Contrary to the shell tube heat exchanger 1 of FIG. 2, the medium A is flown in the shell 26 and the heat source fluid B is flown in the heat transfer tube 27. A medium outlet nozzle 13 is formed at one end of the shell 26, and a heat source fluid inlet header 31 having a heat source fluid inlet nozzle 30 is connected to the medium outlet nozzle 13. The medium outlet nozzle 13 is a medium inlet nozzle of the first shell tube heat exchanger 11. 5, the heat source fluid inlet nozzle 30 is connected to the first shell tube heat exchanger 11 via the heat source fluid connecting pipe 14.
Are connected to the heat source fluid outlet nozzles 25 of FIG.
A medium inlet nozzle 15 is formed at the other end of the shell 26, and a heat source fluid outlet header 33 having a heat source fluid outlet nozzle 32 is connected to the medium inlet nozzle 15.
次にこのように構成された複合形シェルチューブ熱交換
器を媒体の蒸発器として使用する場合の作用を述べる。Next, the operation of using the composite shell-tube heat exchanger configured as described above as a medium evaporator will be described.
気液二相状態あるいは液単相状態にある媒体Ａは第２の
シェルチューブ熱交換器１２の媒体入口ノズル１５から
シェル２６内（伝熱管２７の外部）に流入し、伝熱管２
７内を流れる熱源流体Ｂによって加熱されて流れながら
蒸発する。そして、気液二相状態なった媒体Ａは第２の
シェルチューブ熱交換器１２から媒体出口ノズル１３、
媒体入口ノズル５を通って第１のシェルチューブ熱交換
器１１の伝熱管１１内にその二相分流機構２３により均
等に配分されて流入し、ここではシェル２内を流れる熱
源流体Ｂによって更に加熱されて蒸発し、完全に蒸気と
なって媒体出口ノズル１０から流出する。このように媒
体Ａの蒸気量の少ない蒸発の前半には媒体Ａが伝熱管２
７の外部を流れるので、外周壁にフイン等の各種の伝熱
促進加工を施した高性能伝熱管を利用することができ、
媒体Ａの蒸気量が多くなる蒸発の後半には媒体Ａが伝熱
管１の内部を流れるので、ドライアウトによる伝熱性能
の低下を防止することができる。The medium A in the gas-liquid two-phase state or the liquid single-phase state flows from the medium inlet nozzle 15 of the second shell tube heat exchanger 12 into the shell 26 (outside the heat transfer tube 27), and the heat transfer tube 2
It is heated by the heat source fluid B flowing in 7 and evaporates while flowing. Then, the medium A in the gas-liquid two-phase state is transferred from the second shell tube heat exchanger 12 to the medium outlet nozzle 13,
It flows through the medium inlet nozzle 5 into the heat transfer tube 11 of the first shell tube heat exchanger 11 evenly distributed by the two-phase flow dividing mechanism 23, and is further heated by the heat source fluid B flowing in the shell 2 here. Then, the vapor is evaporated, and it completely becomes vapor and flows out from the medium outlet nozzle 10. In this way, the medium A is transferred to the heat transfer tube 2 in the first half of the evaporation when the amount of vapor of the medium A is small.
Since it flows outside 7, it is possible to use high-performance heat transfer tubes with various heat transfer promoting processes such as fins on the outer peripheral wall,
Since the medium A flows inside the heat transfer tube 1 in the latter half of evaporation when the amount of vapor of the medium A increases, it is possible to prevent deterioration of the heat transfer performance due to dryout.
上記複合形シェルチューブ熱交換器は媒体が非共沸混合
媒体であるときには凝縮器として利用することもでき
る。この場合、蒸気量が多い凝縮の前半には上記蒸発の
場合と同様に各種の高性能伝熱管を利用することができ
る。凝縮液量が増して蒸気流速が低下すると、非共沸混
合媒体では凝縮しにくい成分の蒸気がシェル内に滞留し
て熱交換器の伝熱性能の低下を招き易い。しかしなが
ら、本実施例のように気液二相状態の媒体を第１のシェ
ルチューブ熱交換器１１の伝熱管１内に流入させるの
で、シェル内と異なり、凝縮しにくい成分が滞留するこ
とはなく、したがって伝熱性能の低下を防止することが
できる。The composite shell tube heat exchanger can also be used as a condenser when the medium is a non-azeotropic mixture. In this case, various high-performance heat transfer tubes can be used in the first half of the condensation with a large amount of vapor, as in the case of the above evaporation. When the amount of condensate increases and the flow velocity of vapor decreases, the vapor of the component that is difficult to condense in the non-azeotropic mixed medium stays in the shell, and the heat transfer performance of the heat exchanger tends to deteriorate. However, since the medium in the gas-liquid two-phase state is caused to flow into the heat transfer tube 1 of the first shell-tube heat exchanger 11 as in the present embodiment, unlike the inside of the shell, components that are difficult to condense do not stay. Therefore, it is possible to prevent deterioration of the heat transfer performance.
このように複合型シェルチューブ熱交換器によれば高性
能な蒸発器あるいは凝縮器を実現することができる。Thus, according to the composite shell tube heat exchanger, a high performance evaporator or condenser can be realized.
実施例では二相分流機構２３がバッフル板７と伝熱管１
の小孔８などから構成されているが、二相分流機構２３
としては実施例のものに限らず、種々のものが利用可能
である。例えば、媒体入口ヘッダ６内に安定した媒体Ａ
の液相Ｌの自由液面２２を形成することができるものな
ら、必ずしもバッフル板７は必要とされないし、液相Ｌ
の自由液面２２に伝熱管１の上端部を位置させてその上
端部から液相Ｌと気相Ｇを流入させるようにすれば、必
ずしも伝熱管１の小孔８は必要とされない。In the embodiment, the two-phase flow dividing mechanism 23 includes the baffle plate 7 and the heat transfer tube 1.
The two-phase flow dividing mechanism 23
The present invention is not limited to the example, and various types can be used. For example, a stable medium A in the medium inlet header 6
The baffle plate 7 is not necessarily required as long as the free liquid surface 22 of the liquid phase L can be formed.
If the upper end of the heat transfer tube 1 is located on the free liquid surface 22 and the liquid phase L and the gas phase G are allowed to flow in from the upper end, the small hole 8 of the heat transfer tube 1 is not necessarily required.
伝熱管１の入口部は必ずしも垂直である必要はなく、多
少傾斜させることもできる。The inlet of the heat transfer tube 1 does not necessarily need to be vertical, and can be inclined to some extent.
熱源流体Ｂが伝熱管１に直交して流れるものである場合
には、小孔８の数や大きさを伝熱管１毎に異ならせ、伝
熱管１内を流れる媒体の量を異ならせることもできる。When the heat source fluid B flows orthogonally to the heat transfer tube 1, the number and size of the small holes 8 may be different for each heat transfer tube 1, and the amount of the medium flowing in the heat transfer tube 1 may be different. it can.
［発明の効果］ 以上の説明から明らかなように本発明によれば、実質的
に水平の伝熱管の媒体入口部を上方に曲げて形成してい
ることから、その媒体入口部に伝熱管の管軸と交差する
媒体の自由液面を形成することが可能となり、媒体入口
ヘッダ内に種々の構成の二相分流機構を設けることがで
き、媒体の気相および液相を各伝熱管内に均等に配分す
ることもでき、よって伝熱性能の低下を防止することが
できる。[Effects of the Invention] As is clear from the above description, according to the present invention, since the medium inlet portion of the substantially horizontal heat transfer tube is formed by being bent upward, the medium inlet portion of the heat transfer tube is formed. It is possible to form a free liquid surface of the medium that intersects with the tube axis, it is possible to provide a two-phase flow dividing mechanism of various configurations in the medium inlet header, and the gas phase and liquid phase of the medium are introduced into each heat transfer tube. The heat transfer performance can be prevented from being lowered evenly.
また、このシェルチューブ熱交換器に媒体が伝熱管の外
部（シェル側）を流れる第２のシェルチューブ熱交換器
を接続すれば蒸発器あるいは凝縮器としてより一層の効
果を発揮する。すなわち、蒸発器の場合には高性能伝熱
管を用いてしかもドライアウトによる蒸発伝熱性能の低
下を防止でき、非共沸混合媒体使用の凝縮器の場合には
高性能伝熱管を用いてしかも凝縮しにくい成分の蒸気の
滞留を防止できるから結果的に高性能な蒸発器あるいは
凝縮器を実現できることになる。Further, if a second shell tube heat exchanger in which the medium flows outside the shell (shell side) is connected to the shell tube heat exchanger, a further effect as an evaporator or a condenser is exhibited. That is, in the case of an evaporator, it is possible to use a high-performance heat transfer tube and to prevent a decrease in evaporation heat transfer performance due to dryout, and in the case of a condenser using a non-azeotropic mixture medium, a high-performance heat transfer tube is used. Since it is possible to prevent the retention of vapor of components that are difficult to condense, a high performance evaporator or condenser can be realized as a result.
第１図は本発明に係るシェルチューブ熱交換器の一実施
例を示す断面図、第２図は本発明の他の実施例を示す平
面図、第３図は第２図のＸ−Ｘ線矢視断面図、第４図は
第２図のＹ−Ｙ線矢視図、第５図は従来のシェルチュー
ブ熱交換器を示す断面図である。 １……伝熱管、２……シェル ２０……媒体入口部、２３……二相分流機構 ２６……第２のシェル、２７……第２の伝熱管 Ａ……媒体、Ｂ……熱源流体 Ｇ……気相、Ｌ……液相FIG. 1 is a sectional view showing an embodiment of a shell tube heat exchanger according to the present invention, FIG. 2 is a plan view showing another embodiment of the present invention, and FIG. 3 is a XX line in FIG. FIG. 4 is a sectional view taken along the arrow, FIG. 4 is a sectional view taken along the line YY of FIG. 2, and FIG. 5 is a sectional view showing a conventional shell tube heat exchanger. 1 ... Heat transfer tube, 2 ... Shell 20 ... Medium inlet part, 23 ... Two-phase flow splitting mechanism 26 ... Second shell, 27 ... Second heat transfer tube A ... Medium, B ... Heat source fluid G: Gas phase, L: Liquid phase
Claims (2)
の媒体を流す複数の伝熱管を実質的に水平に配置したシ
ェルチューブ熱交換器において、前記伝熱管の媒体入口
部を上方に曲げて形成し、この媒体入口部に媒体を気相
と自由液面を有する液相とに分離してからそれぞれの伝
熱管に供給する二相分流機構を設けたことを特徴とする
シェルチューブ熱交換器。1. A shell tube heat exchanger in which a plurality of heat transfer tubes for flowing a medium in a gas-liquid two-phase state are arranged substantially horizontally in a shell in which a heat source fluid is flown, and a medium inlet portion of the heat transfer tubes is upwardly moved. A shell tube characterized in that it is formed by bending it into a medium, and at the medium inlet portion, a two-phase flow dividing mechanism is provided for separating the medium into a gas phase and a liquid phase having a free liquid surface and then supplying each to the heat transfer tubes. Heat exchanger.
第２のシェルを接続し、熱源流体を前記第２の伝熱管の
内部に流すと共に媒体が第２の伝熱管の外部を流れて二
相分流機構に流れ込むことを特徴とする請求項１記載の
シェルチューブ熱交換器。2. A second shell having a second heat transfer tube is connected to the two-phase flow dividing mechanism, a heat source fluid is caused to flow inside the second heat transfer tube, and a medium flows outside the second heat transfer tube. The shell tube heat exchanger according to claim 1, wherein the shell tube heat exchanger flows into the two-phase flow dividing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6734988A JPH0658198B2 (en) | 1988-03-23 | 1988-03-23 | Shell tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6734988A JPH0658198B2 (en) | 1988-03-23 | 1988-03-23 | Shell tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01244286A JPH01244286A (en) | 1989-09-28 |
| JPH0658198B2 true JPH0658198B2 (en) | 1994-08-03 |
Family
ID=13342452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6734988A Expired - Fee Related JPH0658198B2 (en) | 1988-03-23 | 1988-03-23 | Shell tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658198B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100720714B1 (en) * | 2006-06-23 | 2007-05-21 | (주)경진티알엠 | Apparatus for large-scale heat pump with two-step shell-tube heat exchanger |
| GB2518513B (en) * | 2014-08-08 | 2016-07-13 | Kan Chung Hoi | A heat exchanger system |
| CN104236174B (en) * | 2014-09-25 | 2016-04-06 | 天津商业大学 | In pipe, high liquid soaks the shell and tube evaporator of fluid interchange |
| CN109520330B (en) * | 2017-09-19 | 2021-02-26 | 杭州三花研究院有限公司 | Heat exchanger and heat exchange system |
| JP7505748B2 (en) * | 2020-07-22 | 2024-06-25 | 中山エンジニヤリング株式会社 | Heat exchanger |
-
1988
- 1988-03-23 JP JP6734988A patent/JPH0658198B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01244286A (en) | 1989-09-28 |
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